diff --git a/Gemfile.lock b/Gemfile.lock
index 680e8037..6ab0386f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -110,7 +110,7 @@ GEM
     caxlsx_rails (0.6.2)
       actionpack (>= 3.1)
       caxlsx (>= 3.0)
-    chartkick (3.4.2)
+    chartkick (4.1.2)
     childprocess (3.0.0)
     chronic (0.10.2)
     chunky_png (1.4.0)